This will not be Bieber's first appearance on the show. He previously performed
as the musical guest in April 2010 and also cameoed in a school sketch where he serenaded his teacher, played by Tina Fey (video below).

Bieber joins the long line of entertainers who have been the host and musical guest in the same episode, from Lily Tomlin and The Rolling Stones back in the day to Britney Spears, Justin Timberlake and Taylor Swift in recent years.

Bieber's got a pretty good sense of humor, it might be a great episode. What do you think, "SNL" fans?